Power-transmission mechanism



June 5, 1928.

A. WILLIAMS POWER TRANSMISSION MECHANISM 2 Sheets-Sheet l #5 mm M2 M m 6 0 m W Tum WW L Filed Feb. 24, 1925 June 5, 1928. 1,672,014

A. WILLIAMS POWER TRANSMISSION MECHANISM (Tor-neg;

Patented June 5, 1928.

, 'UN-iTEDfs'mrEs PATEN flF'FlCfEr v amaae'wnmam s,*p enlist ItAfIbSLMICH IGAN, Assm'N'oR, BY imsim hs stqia- 1 MENTs; T.O"COVELIZ'-HANCHETT' 'coi,-"0F BIG RAPIDS, MICHIGAN, A coRrom'TIoNfor MIGHIGAN.

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implication ni d retnia r 24, 1925. serial no. 111111.

This inventionfrelates to 'povver transniis sion mechanism fparticularly, to actuate a cross feed forgrinding machmes. In machines o-fthis character a table for carryingythe Work to begacted upon by an over-head. grinding Wheel; is v movable back. and forth under the. Wheeland it is also neeessary 'that the Work be fedin' a direction transverse of the movement of the "table.

My invejntiony 'is directedto novel-power transmission mechanisnjr for effecting. th s cross feed n either d rection and also for rendering the cross feed inoperative- While .the machineis Working, in Which-case the rej ciprocating table vvill move back: and. forth under. the. grinding wheelzbut there Will. be

no movement of ,tliesaine,transverse/E 7 v H e passes throughthe lug and at itsoute r end direction of its reciprocatory movement,

The invention consists lngvar ous novel 2O mechanisms for attaining; the above .de-

scribed endsv all of which will fully appear.

as understanding ofthe invention is had from the following description takenin conneetion wlththe accompanying draw1ngs,'1n.-

which Fig. 1 is a partial end elevation and ver-.1

tical sectionof the upper portion of a gri'nd*- ing machine equipped 'With the invention.

F ig. 2 isa-vertical seetion on the planeof 3 line '22 of Fig. 3, and

through the novel form of clutch mechanism used to control the cross feed.

Like reference characters parts in the different figures of the draW- ings.

4 at the rear, a vertical support 2 extends on Fig. 3 is an enlarged vertical section V y. wh erk. i first aattaahedi th .WQ-Ik ql ng ta lea d i de re ltmmeveith refer to like:

The grinding machine incliides 'a suitable supporting pedestal or body :1 .froin which.

which a forwardly 'extending arm" 3= is mounted, the same carrying the grinding Wheel 4. at its front end. The details of mechanism 'forrota'tably mountinganddriv From the-cross table 5 afliig bw l y. p ie islot a in the topei the an 1 of the g indi g machin A is evi dent fhat the cro sis ta-ble carry ingthe 75 k hold ng ta l m r 'e mevd: wardl or outward y ,6 5. r ng th W913 in proper p io wit respect to the-[ r nds ..wh 1- is n ss ry Par icular:

same to proper positionfor the beginning of the action of the grinding wheel on the v p work. i

A pinion 13 is fixed;to yt he;sha-ft lQ and meshes with a gear 14: formed on a relative- 1y large cup-s ap d h n-s ngl ;.-1Thea tt. of this housing. h aicentra openin th ou h itthrough which a he yyr ylindr qali dri in memberlB. d ywh fqrm dia th upper-rend of an 'r'm" 1, the-. 'eme ear a against the out'er sideofsthe base of the t housing '15 and being; located between isaid housing and Ta large boss l2, integral, with anl ext nding inwardly from the apron 12. 96 A ."shouldred-stud' 181pass'es through the I apron and the boss 12 and is threaded into the member 16 whereby said member 16 is rotatably mounted to turn about the axis of the stud 18, said stud turning freely in the boss 12 The open side of the housing is closed by a ring or plate and attached thereto by screws 15 and a large central opening is made through it for the passage of a cupshaped shitting, member 19 having a closed outer end 19 This member at its inner side is formed'with ,a suitable keyway 20? in which a key 29 secured to a sleeve 21 surrounding the member 16' is located, the sleeve 21 being permanently secured to the member 16 by means of the dowels 22, best shown'in Fig. 3. Sleeve 21 is also formed with anumber of longitudinal slots 23 in its outer side in which spring actuated fingers 24 passing through radial openings in the member'19 mayat times be partly'received, th efisprings actuating said fingers 24 being seated against the bottoms of the slots 23.

Located within the housing 15 and around the member-'19 are three rings 25, 26, and 27'. The ring 25 is located between rings 26 and27 and 'flormed at its inner side with a concave annular recess into which the projecting convex outer ends of the fingers 24 may be received. Rings 26 and 27 are each formed at their inner curved sides with a plurality of spaced apart slots or grooves 28 in which theprojecting ends of the fingers army be received on longitudinal movement ot-the shifting member 19, being received in the slots 28 of the ring 27 when moved in one direction and in the slots 28 of the ring 26 when moved inth'e opposite direction. Each of the rings 26 and 27 at its'outer curved side is formed with a consecutive series of ratchet teeth 29. The rings 25,26 and 27 are surrounded by a larger ring 30 having a width equal to the combined width of the three rings 25, 26 and"27, The ring 25 is contained within the ring-30 and may be either fixed or rotativejrelative thereto, its operation not being afl'ected by rotation. This ring 30 is located Within and permanently secured in fixed position to the sides of the housing15 by use of dowels 30" similar to the dowels 22 previously noted, At a number of points in the circumference of the outer ring 30 around each of the inner rings 26 and 27,

slots are cut in which spring actuated blocks 31 are slidably mounted, each at itsinner end being formed with a dog 32 shaped to fit between any two consecutive teeth 29 oft-he associated rings 26 or 27. It is evident that with the dogs engaged with the ring 26, for example, on movement of said ring: in one direction, the housing 15 will be rotated but when moved in the opposite direct-ion the ratchet teeth will slip over the dogs and the housing will not be turned. The teeth 29 on the two rings 26 and 27 are oppositely formed and the dogs 32 to engage therewith correspond, whereby by connecting the inner member 16 with one of the rings, an oscillation of the housing 15 will take place in one direction with no movement in the opposite direction, while the connection with the other ring will cause a directly reverse movement of the housing 15 with no move ment in the other direction; and with the shifting member 19 in aneutral position, as shown in Fig. 3, the turning of the inner driving member .16 has no effect upon the housing 15.

A rod 33 passes through the upper end of the front or the body 1 and is perma- I nently connected to the base 19 of the shift- Y ing member. At its inner end it passes through a sleeve 34 in which itmay rotate,

said sleeve being held against longitudinal movement on the rod between a collar 35 pinned to the rod at one end of the sleeve 34 and the head 33 formed at the inner end of the rod 33. Sleeve 34 is located between two arms of the yoke 36' at-the end of a short bar 37 which is pivotally connected to the upperend of an arm 38, fixed to the horizontal rockshaft 39 mounted on the body of the grinding machine and extending outwardly atone end beyond the side'ot said body where it is equipped with a suit able handle for manual operation. arms of theyoke 36 are pivotallyconnected to the sleeve 34 at opposite sides as shown in Fig. 3. It is evident that by manual operation of the handle the shifting member 19 may bemoved to any one of'its three positions, the neutral position as shown in Fig. 3, or to connect the lingers 24 with either of the rings 26 or 27.

A link 41 1s pivotally connected at its uper end to the end of the arm 17 and at its ower end to a'disk 42. 'An adjustable connection is made with the disk by means of a releasable connection 43 which may be shifted to different positions in a radial slot (not shown) cut in the disk 42. This disk 42 in 'rindin machines of this character Vith the construction described'the cross feed or the cross table ,5 may be controlled as desired. By operating the handle 'connect'ed to the shaft 39 in one direction and thereby connecting the member 16, which The I oscillates b ack "and "forth about its; "a-xis' and and the "gear 14 thereon in 'one direction 'is had, this turning th'e' sli'aft 10 and m ving the cros table F onedirection{but by connecting said drivi-Iig member 16 with the opposite ring the rotation of the housing 15 is in the opposite direction and the cross table is moved in the opposite direction. Accordingly movement in or out automatically efiected by the mechanism' described may be had. And when it is desired that the cross table have no movement, a neutral position is provided wherein the driving member 16 does not engage with either ring 26 or 27, this neutral position being shown in Fig. 3. The construction is very practical and effective and has so proved in practice. Various changes in detail may beresorted to without departing from the invention defined in the appended claims and it is to be considered that the invention is comprehensive of all forms of structure coming within the scope of said claims.

I claim: 1

1. Transmission mechanism comprising a cup-shaped housing, a driving. member mounted for oscillation about a horizontal axis extending into said housing, a shifting member slidably keyed on said driving mem her and extending thereover, two separate means located within the housing, with either of which said shifting member may be selectively connected so. that either of said means may be driven back and forth by the oscillation of the driving member, and means interposed between each of said .separate means and the housing for driving the housing when said means is turned in-one direction and not drive the housing when turned in the opposite direction, the direction of driving of the housing by said means being opposite with the two means, substantially as described.

2. A construction containing the elements in combination defined in claim 1 combined with an intermediate means interposed between said two means with which the shifting member may be engaged, said interme diate means being free from connection to the housing whereby the housing may remain at rest while the driving member is oscillated, substantially as described.

3. Transmission mechanism comprising a housing mounted for rotation, a driving member extending into the housing adapted to be oscillated back and forth about its axis, a shifting member keyed to said driving member and shiftable lengthwise thereof, two spaced apart rings mounted within the housing and formed at their outer curved sides with consecutive ratchet teeth and at theirinner curved sides with spaced apart slots, the ratchet teeth of the two rings be rotated and in the opposite direction 'slipping over the teeth of the ratchet, substantially as described.

4. A construction containing the elements in combination defined inclaim 3 combined with a third ring located between said ratchet rings, said third ring being free from connection with the housing and at its inner side being formed to engage with said means carried by the shifting member, substantially as and for the purposes described.

5. Transmission mechanism comprising a rotatable housing, a driving member extending into the housing at one side adapted to be oscillated back and forth about its axis, a

shift-ing member keyed to the driving member and extending into the housing from the opposite side, two separate members located within the housing with either of which the shifting member may be selectively connected, interengaging means between one of said members and the housing for driving the housing in one direction on oscillation of said member in said direction, sald means being inoperative to drive the housing in the opposite direction on the oscillation of said member in said opposite direction, and like interengaging means between the housing and the other member whereby the housing is driven in the direction opposite to which it is driven by the first member, substantially as described. 1

Y 6. A construction of the class described, comprising a cup-shaped housing, a driving member extending into one side of the housing, said driving'member being adapted to be oscillated back and forth about its longitudinal axis, a shifting member extending into the opposite side of the housing and overthe driving member, said shifting and driving members being splined together, two spaced apart rings located in the housing around the shifting member, each of said rings at its inner curved side being. provided with a plurality of spaced apart transverse slots, spring actuated keys carried by the I shifting member adapted to be received in said slots, ratchet teeth at the outer curved side of each of said rings, the teeth of one of the rings being cut opposite to theteeth of the other, spring actuated dogs carried by the housing to engage with said teeth whereby the housing is driven by a ring connected with the shifting member in one direction when the ring is turned in said direction and is not driven when the ring is turned in the opposite direction, the direction of driving for the two rings being opposite, and means for siidably moving the shifting member in the direction of its longitudinal, axis, substantially as described.

. 7. vA construction containing the-elements in combination defined in claim 6 combined with athird ring between the two ratchet rings, said third ring being loosely mounted Within the housing and formed at its inner side With an;- annular recess shaped-in con-,- 10 formity with the outerqends' of said keys, substantially as described. t -In testimony whereof I affix my signature.-

" Y 7 ARTHUR WILLIAMS. 

